ionic: remove unnecessary void casts

Minor Code cleanup details.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: Prevent filter add/del err msgs when the device is not available

Currently when a request for add/deleting a filter is made when
ionic_heartbeat_check() returns failure the driver will be overly
verbose about failures, especially when these are usually temporary
fails and the request will be retried later. An example of this is
a filter add when the FW is in the middle of resetting:

IONIC_CMD_RX_FILTER_ADD (31) failed: IONIC_RC_ERROR (-6)
rx_filter add failed: ADDR 01:80:c2:00:00:0e

Fix this by checking for -ENXIO and other error values on filter
request fails before printing the error message. Add similar
checking to the delete filter code.

Fixes: f91958cc9622 ("ionic: tame the filter no space message")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: tame the filter no space message

Override the automatic AdminQ error message in order to
capture the potential No Space message when we hit the
max vlan limit, and add additional messaging to detail
what filter failed.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: handle vlan id overflow

Add vlans to the existing rx_filter_sync mechanics currently
used for managing mac filters.

Older versions of our firmware had no enforced limits on the
number of vlans that the LIF could request, but requesting large
numbers of vlans caused issues in FW memory management, so an
arbitrary limit was added in the FW. The FW now returns -ENOSPC
when it hits that limit, which the driver needs to handle.

Unfortunately, the FW doesn't advertise the vlan id limit,
as it does with mac filters, so the driver won't know the
limit until it bumps into it. We'll grab the current vlan id
count and use that as the limit from there on and thus prevent
getting any more -ENOSPC errors.

Just as is done for the mac filters, the device puts the device
into promiscuous mode when -ENOSPC is seen for vlan ids, and
the driver will track the vlans that aren't synced to the FW.
When vlans are removed, the driver will retry the un-synced
vlans. If all outstanding vlans are synced, the promiscuous
mode will be disabled.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: generic filter delete

Similar to the filter add, make a generic filter delete.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: generic filter add

In preparation for adding vlan overflow management, rework
the ionic_lif_addr_add() function to something a little more
generic that can be used for other filter types.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: add generic filter search

In preparation for enhancing vlan filter management,
add a filter search routine that can figure out for
itself which type of filter search is needed.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: move lif mac address functions

The routines that add and delete mac addresses from the
firmware really should be in the file with the rest of
the filter management. This simply moves the functions
with no logic changes.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: move filter sync_needed bit set

Move the setting of the filter-sync-needed bit to the error
case in the filter add routine to be sure we're checking the
live filter status rather than a copy of the pre-sync status.

Fixes: 969f84394604 ("ionic: sync the filters in the work task")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: fix a sleeping in atomic bug

This code is holding spin_lock_bh(&lif->rx_filters.lock); so the
allocation needs to be atomic.

Fixes: 969f84394604 ("ionic: sync the filters in the work task")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Link: https://lore.kernel.org/r/20210903131856.GA25934@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

ionic: sync the filters in the work task

In order to separate the atomic needs of __dev_uc_sync()
and __dev_mc_sync() from the safe rx_mode handling, we need
to have the ndo handler manipulate the driver's filter list,
and later have the driver sync the filters to the firmware,
outside of the atomic context.

Here we put __dev_mc_sync() and __dev_uc_sync() back into the
ndo callback to give them their netif_addr_lock context and
have them update the driver's filter list, flagging changes
that should be made to the device filter list. Later, in the
rx_mode handler, we read those hints and sync up the device's
list as needed.

It is possible for multiple add/delete requests to come from
the stack before the rx_mode task processes the list, but the
handling of the sync status flag should keep everything sorted
correctly. For example, if a delete of an existing filter is
followed by another add before the rx_mode task is run, as can
happen when going in and out of a bond, the add will cancel
the delete and no actual changes will be sent to the device.

We also add a check in the watchdog to see if there are any
stray unsync'd filters, possibly left over from a filter
overflow and waiting to get sync'd after some other filter
gets removed to make room.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: add rx filtering for hw timestamp steering

Add handling of the new Rx packet classification filter type.
This simple bit of classification allows for steering packets
to a separate Rx queue for processing.

Signed-off-by: Allen Hubbe <allenbh@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: update filter id after replay

When we replay the rx filters after a fw-upgrade we get new
filter_id values from the FW, which we need to save and update
in our local filter list. This allows us to delete the filters
with the correct filter_id when we're done.

Fixes: 7e4d47596b68 ("ionic: replay filters after fw upgrade")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: fix up filter locks and debug msgs

Add in a couple of forgotten spinlocks and fix up some of
the debug messages around filter management.

Fixes: c1e329ebec8d ("ionic: Add management of rx filters")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: fix unused assignment

Remove an unused initialized value.

Fixes: 7e4d47596b68 ("ionic: replay filters after fw upgrade")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: add dynamic_debug header

Add the appropriate header for using dynamic_hex_dump(), which
seems to be incidentally included in some configurations but
not all.

Fixes: 7e4d47596b68 ("ionic: replay filters after fw upgrade")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: replay filters after fw upgrade

The NIC's filters are lost in the midst of the fw-upgrade
so we need to replay them into the FW. We also remove the
unused ionic_rx_filter_del() function.

Fixes: c672412f6172 ("ionic: remove lifs on fw reset")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: Add management of rx filters

Set up the infrastructure for managing Rx filters. We can't ask the
hardware for what filters it has, so we keep a local list of filters
that we've pushed into the HW.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>